Regenerative braking system is an energy recovery system that coverts the kinetic energy of the vehicle produced during deceleration of the vehicle to the electrical energy. The converted energy is stored in the vehicle energy storage unit to use it in other applications such as start-stop function, headlights and powering vehicle's interior electronics, among others.

The regenerative braking system uses different types of energy storage units such as flywheel, batteries and ultra-capacitors among others. In order to increase the fuel efficiency and range of the vehicles RBS is widely used in hybrid and battery electric vehicles.

Owing to the efficient performance of RBS and increase in number of hybrid and battery electric vehicles the market for regenerative braking system is expected to increase at a rapid pace.